The training manager of a company that assembles and exports pool pumps wants to know if there is a link between the number of hours spent by assembly workers in training and their productivity on the job. A random sample of 10 assembly workers was selected and their performances evaluated. Use the information below to calculate the slope of the regression equation (rounded off to four decimals). Training hours (x) 20 36 20 38 40 33 32 28 40 24 Output (y) 40 70 44 56 | 60 48 62 54 63 38 Use the following measures for further calculations: Ex = 311 Zy = 535 Exy = 17240 Ex2 = 10213 Zy? = 29649 %3D O A. 1.1120 OB. 0.5860 • C. 0.5269 D. 18.9168
The training manager of a company that assembles and exports pool pumps wants to know if there is a link between the number of hours spent by assembly workers in training and their productivity on the job. A random sample of 10 assembly workers was selected and their performances evaluated. Use the information below to calculate the slope of the regression equation (rounded off to four decimals). Training hours (x) 20 36 20 38 40 33 32 28 40 24 Output (y) 40 70 44 56 | 60 48 62 54 63 38 Use the following measures for further calculations: Ex = 311 Zy = 535 Exy = 17240 Ex2 = 10213 Zy? = 29649 %3D O A. 1.1120 OB. 0.5860 • C. 0.5269 D. 18.9168
Chapter3: Polynomial Functions
Section: Chapter Questions
Problem 18T
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Transcribed Image Text:The training manager of a company that assembles and exports pool pumps wants to know if there is a link between the number of hours spent by assembly
workers in training and their productivity on the job. A random sample of 10 assembly workers was selected and their performances evaluated. Use the
information below to calculate the slope of the regression equation (rounded off to four decimals).
Training hours (x)
20
36
20
38
40
33
32
28
40
24
Output (y)
40
70
44
56
60
48
62
54
63
38
Use the following measures for further calculations:
Ex 311 Zy = 535 Exy 17240
Ex² = 10213
Ey² = 29649
%D
%3D
%3D
A. 1.1120
B. 0.5860
• C. 0.5269
D. 18.9168
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